From the Spanish telegram community of Duet we are making an integration with Nodered, to have bot, timelapse, dashboard for various duet machines ...

soon we will have an image for raspberry to release preconfigured, with which anyone can continue to customize

mqtt bridge include in this option, read data from duet api, use in flow and inject to mqtt server, o in the include server in the pi

Leds control is macro call in the duet board, and the macro set the pwm in pin in expansion port, and read with small arduino or wemos, and change the effect.
is possible set effect for heating, error, printing, homing, finish etc...

From the Spanish telegram community of Duet we are making an integration with Nodered, to have bot, timelapse, dashboard for various duet machines ...

soon we will have an image for raspberry to release preconfigured, with which anyone can continue to customize

mqtt bridge include in this option, read data from duet api, use in flow and inject to mqtt server, o in the include server in the pi

Leds control is macro call in the duet board, and the macro set the pwm in pin in expansion port, and read with small arduino or wemos, and change the effect.
is possible set effect for heating, error, printing, homing, finish etc...

I will have to calculate it again since we use 24V, right?

@EasyTarget Could you specify more what you mean with a zener circuit? a single diode? I have seen an old model duet connected only with a diode.

The protection circuit of the door, water and emergency button are in series, so we only need to control the fire pin if we connect the IN pin directly to 5V?

Thank you!

i found in house this conversor, buy for control vfd from duet.

is valid for control laser power supply?

I think it is not the same since it is a diode.

I found info about the source, it is the green version of this link

https://www.everythinglasers.com/forums/topic/power-supply-info/

Green Supply

Leftmost
Connector #1
Pin #1 HIGH VOLTAGE Return (from ma meter)
Pin #2 AC Ground – goes to Chassis Ground and Mains Ground
Pin #3 AC IN #1
Pin #4 AC IN #2 (In US, either can be Neutral)

Middle
Connector #2
Pin #1 (G) “Laser Switch”, “Test Switch”
Pin #2 (P) “Laser Switch”
Pin #3 (L) “Test Switch”
Pin #4 (G) – Pot CCW Pin (turning knob ccw contacts this)
Pin #5 (IN) – Pot Center Pin (0-5V DC output level control)
Pin #6 (5V) – Pot CW Pin (turning knob cw contacts this)

Rightmost
Connector #3
Pin #1 24Vdc out – runs to motor controllers
Pin #2 Ground
Pin #3 5Vdc – Control power
Pin #4 “L” or “LO” Laser control. This turns ON the 15KV power when pulled to ZERO volts (Negative logic)

would this adapter work?

https://www.amazon.com/Voltage-0-100-Linear-Conversion-Transmitter/dp/B00U7GJDVO


Something like this would work?

https://www.amazon.com/Voltage-0-100-Linear-Conversion-Transmitter/dp/B00U7GJDVO

connected to a fan or heater, take the pwm at 24v and transform it to 0-5V DC

Hello!
In a group of economic CO2 laser, Blue K40 laser, we want to change the board of our machines and we are considering using duet maestro, since several of us already use duet in our machines.

I have searched and found contradictory information in the forum, external websites etc ... and I wanted to check the current state of laser development (in one of the last changelog mentioned lightburn software), and the connection to this type of machines.

There are some people who have migrated it to ramps, they use the servo ports for laser control, 2 pins since one is pwm for power and the other is activation at 5V.

I will be putting the info I have located on the laser and see if together we can confirm if the change is possible, since the current board does not allow pwm in the gcode, it is controlled from a separate panel that generates the pwm, but not by gcode

There are people who have changed it with a cohesion3d board, but they are not cheap and they come from the USA, so you have to pay customs. Also, if possible, we prefer to maintain the duet3D ecosystem ; P

I use a translator, so if any part is not clear, let me know and check it.

this is schematic for ramps:

Github marlin conversion, with schematic and firmware

More info for ramps, http://weistekengineering.com/?p=2406

Other link: http://3dprintzothar.blogspot.com/2014/08/40-watt-chinese-co2-laser-upgrade-with.html

and original firm marlin for K40 https://github.com/TurnkeyTyranny/buildlog-lasercutter-marlin

fin this with first duets, only with diode : https://reprap.org/forum/read.php?133,521301

is possible control pwm 5V with duet? use fan port with 5V?

I'm a little lost to start the conversion, or if possible, although it seems that there will be no problem.

thanks!